[Bromide poisoning and false hyperchloremia].

A 36-year-old female patient was admitted at three different times for neuropsychiatric disorders. No diagnoses were made during the first two hospital stays. A pseudohyperchloraemia allowed the diagnosis of bromide poisoning during her third hospital stay. Chloraemia was measured over 16 days by potentiometric, colorimetric and coulometric methods, in order to assess the analytical interferences caused by bromides. Results are reported and discussed. Bromide poisoning was treated by saline diuresis.